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Route Reliability

STS → Phoenix

STS–PHX · 699 miles · STS Airport to Phoenix Sky Harbor International Airport

84
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
14 min
Average arrival delay
0.3%
Cancelled
693
Flights in the data

Data through May 2026.

American Airlines is the only airline in this data on this route, arriving on time 79% of the time across 693 flights. No comparison to make.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 81% of the time, against 77% between 12–3 PM.

Friday is doing you no favors.

STS–PHX flights arrived on time 86% of the time on Saturdays. On Fridays: 73%.

It basically never cancels.

Out of 693 scheduled flights, only 0.3% were cancelled.

Flights on this route

The breakdown

On-time by weekday
  • Mon76%(102 flights)
  • Tue83%(92 flights)
  • Wed80%(95 flights)
  • Thu78%(100 flights)
  • Fri73%(100 flights)
  • Sat86%(95 flights)
  • Sun78%(106 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 12–3 PM77%(362 flights)
  • 3–6 PM81%(327 flights)
On-time trend by month
75%
May

Jun 75% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%60
July 202562%61
August 202592%62
September 202582%54
October 202569%61
November 202578%50
December 202577%48
January 202677%62
February 202695%55
March 202684%62
April 202684%56
May 202675%59

Keep nerding

Based on 693 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.